1 definition by Dr. Basketcase

Top Definition
FUI
FUI: Facebook Under the Influence. The act of writing, participating, or using Facebook, or any other social network while intoxicated. The modern extension of drunk dialing.
I never should have messaged he/she last night on Facebook. I was so FUI! Now I'll never get in his/her pants!
by Dr. Basketcase December 16, 2008

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